Corydoras sterbai


Corydoras sterbai
Sterbai Corycat
金珍珠鼠
Sterba's corydoras (Corydoras sterbai) is a member of the South American Corydoras genus of freshwater aquarium catfish and one of the most popular species of Corydoras due to its attractive markings.
Sterba's Cory is distinguishable from other Corydoras species as it has white spots on its head from eyes down to snout. It is occasionally confused with Corydoras haraldschultzi; the difference is that the latter has a pattern of black dots on a white background on the head, C. sterbai has a pattern of white dots on a black background. C. sterbai has recently become available in an albino form and a black form.
Like many Corydoras species, Sterba's cory is a shoaling catfish, and thus should ideally be kept in groups of 5 or more. In the wild it can be found in Brazil and thus, wild caught fish prefer soft, acidic water. However, Sterba's cory is a hardy fish and tank bred specimens have adapted to a wider range of water conditions. However, like almost all fish it will not tolerate high levels of nitrates.
Unlike some other catfish they are not good algae eaters, but are good at "cleaning up" leftover food and detritus from the substrate.
In captivity Corydoras sterbai readily accepts a wide variety of prepared and frozen foods. Flake food is a good staple diet (which will only be consumed once it has fallen to the bottom) as are sinking pellets/wafers. They relish live and frozen foods such as bloodworm, daphnia and mosquito larvae, but ideally should only be fed such foods once a week due to the high amount of protein in them.
It is often problematic to feed Corydoras in aquaria with fast feeding mid-water fish such as tetras as flake and sinking pellets are consumed by such fish before they have hit the bottom and sometimes, even while lying on the substrate. However, this problem can be overcome by placing pellets and flake on the aquarium substrate in caves or under bogwood, or other such areas which are not regularly frequented by mid-water fish.

The compatibility of C. sterbai is one of their main selling points as with all other Corydoras species as they are very peaceful catfish and can be kept with other peaceful fish. They should not be kept with overly aggressive bottom dwellers, particularly if there is competition over substrate space as there would be in small tanks or tanks with a large amount of "furniture". Ideal companions would be similar sized tetras or particularly, dwarf cichlids.
Ideally Corydoras sterbai should be housed with a fine substrate such as sand or gravel in order to avoid doing damage to their delicate barbels. However, large gravel will suffice as long as it is not sharp edged. Their only other requirement is that shade be provided for them, by means of overhanging rock, large leaved plants, arching bogwood and/or caves.
Breeding is not too difficult; good diet together with repeated water changes and drops of temperature are usually sufficient. However, raising the fry is not easy due to its high sensitivity.


外观最大特征是头部短,短吻,且据点状花纹。鱼体两侧有7-8条斑点所组成的的横条纹,点状网花延伸背鳍、尾鳍及臀鳍;橘色的胸鳍鳍棘,与腹鳍鳍棘是该种最大特征。
满天星鼠的繁殖并不困难,成对的满天星鼠到了繁殖期,可见公鱼不安的四处游动,来选择自己的地盘,并且清理出平坦的产卵房。公鱼会对母鱼展开追求,母鱼会将卵产在平坦的地方,如叶子上,平坦的沉木上,平坦的石头上,甚至缸璧。授精后的卵约4天后,便可看到小鱼孵化。满天星鼠一次可产下约50-150粒卵。
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